Cyril
EPA ID: OK3000805 · 1,168 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Cyril (OK3000805): 1 past health-based violation, since resolved. Since the flagged events, Cyril resolved all 8 violations - compliant today, 1,168 residents served.
Data: EPA SDWIS
Service Area Map
Coverage area for Cyril Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Cyril serves a community with a median household income of $53,473 and an estimated 2,767 residents across its service area. Approximately 75% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 100% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Cyril's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
Detected Contaminants
How Cyril compares to EPA limits
What This Means For You
Revised Total Coliform Rule at 3 presence exceeds the EPA maximum of presence.
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Comparable Water Systems
Similar-sized systems in Oklahoma
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Cyril (EPA ID: OK3000805) is a community water system in Oklahoma that serves approximately 1,168 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 8 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| May 1, 2025 | Revised Total Coliform Rule | Non-health-based | Resolved |
| May 1, 2025 | Consumer Confidence Report Rule | Non-health-based | Resolved |
| March 1, 2025 | Revised Total Coliform Rule | Non-health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Non-health-based | Resolved |
| July 1, 2024 | Surface Water Treatment Rule | Non-health-based | Resolved |
| September 1, 2023 | Consumer Confidence Report Rule | Non-health-based | Resolved |
| July 1, 2023 | Revised Total Coliform Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | 3 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Consumer Confidence Report Rule | Reporting Failure | 2 | No |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.00177 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by OK or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Cyril (OK3000805) on EPA.gov.
Frequently Asked Questions
Is Cyril water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Cyril; its 8 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Cyril serve?
Cyril serves approximately 1,168 people across 2 ZIP codes in Oklahoma.
Where does Cyril get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Cyril (OK): 1 Health Violation. https://zipcheckup.com/water-system/ok3000805/
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title = {{Cyril (OK): 1 Health Violation}},
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url = {https://zipcheckup.com/water-system/ok3000805/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Cyril (EPA ID: OK3000805) - request the latest Consumer Confidence Report or ask about specific contaminants.